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7 The gilt breeding age is 8 to 10 months and the weight is 100 to 110 kg. Since the estrus performance of lean-type sows is not obvious, always observe them regularly. It was found that the sow's pussy changed from pink to purple, and pressing their backs began to start breeding. The morning, evening and early mornings are each spaced once every 8 to 12 hours. Using hybrid superiority, three-way crossbred piglets were raised as commercial pigs.
2, epidemic prevention and health
1. The sow should be dewormed once before mating, and the sow is vaccinated with 4 pigs vaccine 3 to 7 days later.
2. Sows should be vaccinated once every 20 days before their sow.
3. Inoculation of porcine parvovirus and Japanese encephalitis vaccine before mating of newly born sows.
4. Sows are given a foot-and-mouth disease vaccine every 3 months.
5 Regularly repel parasites in pigs, keep pigsty clean, and perform large cleaning, large-scale disinfection, and rodent control every month.
6 strengthen management, it is forbidden to feed moldy degenerate feed and unclean drinking water. Found that sows, piglets onset of care and treatment.
3, feeding and management
1, breeding sows can not be too fat or too thin, feed 2~2.5 kilograms of mixed concentrates a day, fed twice a day. Dietary Nutrition Level: Energy 3.2 to 3.1 mega cards/
Kg contains crude protein 14% to 15%, lysine 0.68% to 0.78%, methionine plus cystine 0.32% to 0.45%, calcium 0.85% phosphorus 0.65%. Feed 2 to 2.5 kg on the first day of pregnancy and 2.5 to 3 kg on the day of pregnancy. If the sow body is too thin or too fat, the amount of feed should be increased or decreased appropriately. Before delivery, it will be too thin. During lactation, it will fall out, leading to prolonged estrus time after weaning, or reduced puerperium at the second delivery: too much fat before delivery. Postpartum lactation, and the bulkiness of the body can easily kill the piglet, and stillbirths will increase.
2) The pregnant sows were rushed into the disinfected delivery room 7 to 10 days before delivery to let them familiarize themselves with the environment, feed 3 meals a day, reduce the diet properly, and stop feeding on the day of calving. Disinfect the breasts with 0.1% potassium permanganate before delivery. Pressing the nipple by hand has white milk flowing out, and about 8 hours later, it will produce calves. Prepare for production.
3) After the piglet is born, wipe its mouth, nostrils and mucus on the body, cut the umbilical cord, feed the colostrum in time, fix the nipple in each piglet, and intramuscularly inject iron such as blood for 2 to 3 days. The piglet is cold and the delivery room should be equipped with an incubator. It should be warmed with a 250-watt infrared lamp and can be used as a litter. According to the growth period, the temperature in the incubator is appropriately adjusted, and it is 32 to 30 degrees Celsius from birth to 3 days, 30 to 28 degrees Celsius from 4 to 1 week, and 28 to 24 degrees Celsius at 2 to 4 weeks.
4) Have a good feed off. The piglets begin to pay for full-price suckling granules for 7 days, and generally feed for 21 to 28 days. They are allowed to feed freely to meet their growth and long bone needs, and then gradually feed full-rate nursery pig feed. The "teaching materials" were carried out by adding brown sugar. The appropriate amount of brown sugar was mixed with the suckling pigs to form a paste on the sow's teat. The piglets gradually reduced the brown sugar after adaptation, and only used the feed.
5) Handle the feed during the lactating sow period. Sows are only fed bran soup 8 to 10 hours after childbirth, and should not feed too much 2 to 3 days after childbirth, and gradually reach the standard feeding amount within 5 to 7 days after delivery, that is, feeding 5.5 to 6 kg of mixed concentrate per head per day. To ensure that the piglets eat enough milk. After 35 days, the piglets were reduced to 3 kg per day at weaning, and the sows were driven off. The piglets remained in the original column and were fed to the nursery for 5 days.
Feeding Management Techniques for Lean Sows
1. Sowing and breeding 1 The gilts should be selected among the progenies propagated in the approved breeding farm core group. The breeding pigs should be well-developed, healthy and disease-free, in line with the characteristics of the varieties, normal development of reproductive organs, and nipples 6 to 7 pairs and arranged. Uniform.